2100022000 has 40 divisors (see below), whose sum is σ = 5077858032. Its totient is φ = 840008000.

The previous prime is 2100021991. The next prime is 2100022007. The reversal of 2100022000 is 2200012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100022007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523006 + ... + 527005.

Almost surely, 2^2100022000 is an apocalyptic number.

2100022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100022000 is an abundant number, since it is smaller than the sum of its proper divisors (2977836032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100022000 is a wasteful number, since it uses less digits than its factorization.

2100022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050034 (or 1050018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2100022000 is about 45825.9969886090. The cubic root of 2100022000 is about 1280.5836368356.

Adding to 2100022000 its reverse (2200012), we get a palindrome (2102222012).

The spelling of 2100022000 in words is "two billion, one hundred million, twenty-two thousand".